Amemo 4 Port USB 3.0 Hub with a Built-in 2ft USB3.0 Cable for iMac, MacBook, MacBook Pro, MacBook Air, Mac Mini, Windows Tablet,laptop,or any PC (Black) Smallest Available: Smaller than most 4 port USB 3.0 Hub options,effectively saves space,convenient to carry at anytime and anywhere. Add 4 uppowered USB 3.0 SuperSpeed ports to your iMac, MacBook, MacBook Pro, MacBook Air, Mac Mini, Windows Tablet,laptop,or any PC, eliminating the trouble of switching among devices. Easy to set up, Plug-n-Play, Hot swappable, hot pluggable, compatible with all Windows/Mac/Linux systems. Enjoy data transfer rates of up to 5Gbps and spend less time syncing.let you transfer an HD movie in seconds.(Important note: actual rate will depend on the capability of your device.) Package contents: Amemo 4-Port USB 3.0 Hub (with built-in 2 ft cable), instruction manual. 1 year manufacturer's warranty.